Ore-crusher



2 Sheets-Sheet 1.

JROGER.

ORE GBUSHER.

(No Model.)

Patented Ded. 29, 1896.

Jnaaa* 2 Sheets-Sheet 2&

J. ROGERV.,

ORE GRUSHER.

(No Model.)

Patented Dec; 29; 1896.

'1 of Fig; 2.

' I ,UNITED STATES:

PATENT OFFICE.

JOHN ROGER, OF DENVER, COLORADO.

ORE-CRUSHER.

SPECIFICATION forming part of Letters Patent No. 574=,273, dated December 29, 1896. I Application filed February 13, 1896. Serial No. 579,133. (No model.)

To all whom it may conccrn:

Be it known that I, JOHN ROGER, a subject of the Queen of England, residing at Denver, in the county of Arapahoe and State of Colorado, have invented certain new and useful Inprovements in Ore-Crushers; and I do de clare the following tobe a `full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has relation to ore-crushers, and the object is to provide an improved resilient and yielding hearing for a crushingroll, whereby the roll may be automatically moved to and from its companion roll, andalso to apply to the movable roll such pressure as may be necessary or requisite to effect the reduction of the material.

I have fully and clearly illustrated my invention in the accompanying drawings, wherein- Figure 1 is a Vertical section on the line 1 Fig. 2 is a transverse vertical section on the line 2 2 of Fig. 1. Fig. 3 is a horizontal section on the line 3 3 of Fig. 1. Fig. 4: is a side elevation of a crushing-mill, partly in section to show the application of the invention to an ore-crushing mill wherein the crushing-rolls are mounted side by side with' their journals on the same horizontal plane.

Referring to the drawings, Figs. 1, 2, and 3, A designates a substantial cast-metal base, which may be of any suitable dimensions and contour to support the parts formed and mounted thereon and to withstand the strains to which it may be subjected by the operating mechanism carried thereby. Formed on this base piece and rising therefron are two oppositely-arranged vertically-disposed lousings 1 l consisting of three-sided boxes rectangular in cross-section and having their inner open sides standing opposite to each .other and in alinement, substantially as indicated in the drawings. Fitted to and slidingly arranged in the ways of the housings 1 1 are sliding boxes 2 2 duplicates in construction and comprising 'rectangular boxes formed with interior cylindrical chambers 3 3 constituting the cylinder chests or chambers, opening at the lower endeof the boxes, substantially as shown.. The boxes 2 2 are united at their lower portions by a strong cross-piece or yoke 4, cast integral therewith, and at the upper end of each box is formed a bearing 5, in which is journaled the shaft 6 of the upper erushing-roller 7, and to keep the journals of the roller from upward dis placement strong bearing caps 8 are arranged over the journals, being held in place by lateral fianges 9 9 formed at their lower portions and setting in ways formed in vertical extensions 10 10 of the sliding boxes. The heads ll 11 of the boxes and cylinders consist of strong metal plates supplemented by holding-plates 12 12 and held in position by means of bolts 13, let through the corners of the boxes, and clamped by nuts on the ends of the bolts, substantially as seen inwthe drawings.

B B' design-ate the pistons, fitted to the cylinders and arranged to stand normally at midway the length of the cylinders and formed with stems 14 l l let through the cylinderheads, and also formed with a shoulder 15 to rest on the upper surface of the bed or base of the frame, the stem or rod being projected through the bed, as shown, and formed with keyholes 16. in which are fitted cotters or keys 17, whereby the piston-rods are keyed firmly in position and so held. The pistonrod 14: is formed with an interior channel 18, starting from a point adjacent to the shoulder on which the stem rests and extending upward to a point closely adjacent to the under face of the piston where it opens radially into the cylinder, as at 19.

A Conduit-pipe 20 is let into the stem 14 at the lower end of the channel 18, through which the air or other elastic medium is conducted to the cylinder below the piston. A cut-oli' cock 21 is interposed in the pipe 20 to let on and cut off the flow of air, &e The piston-rod l is also formed with an interior channel 22, opening up through the piston, as at 22 a Conduit-pipe 2O provided with a cock 21 being let into the stem at the base of the channel, whereby the elastic medium is supplied to the cylinder above the piston. Communication between the cylinders be- IOO low the pistons is elected by means ot' a passage 23,1or1ned through the yoke-piece and opening into the bases of the cylinders; and like communication is made to the cylinders above the pistons by means of a passage 24 in the yoke-piece and extended vertcally, as at 25 parallel with the cylinders and open- .ing therein at the upper ends, as at 26 QG substantially as shown.

The lower roller L is journaled in strong brackets or frames formed 011 or firnly secured to the main frame, and is arranged and held in operative relation to the upper roller by any suitable and well-known means. In Figs. 1, 2, and 3 of the drawings the rollers are shown as having their journals disposed on different vertical planes, throwing the top roller a distance behind the lower one; but it will be perceived that the invention can be readily and Conveniently applied and adapted to crushing-rollers having their journals on the same vertical plane, and can also be applied to rollers having their journals on the sane horizontal plane, and I have therefore shown in Fig. 4 of the drawings the invention applied to the latterarrangementof rollers, and reference being thereto had, it will be seen that the right-hand roller is mounted in sliding bearing-boxes carried by a strong frame, from the end of which project the cylinders in which the pistons are arranged, the stems of which are guided through a yoke or cross piece and abut against the sliding boxes of the roller, and that the elastic medium is let through and into the respective divisions of the cylinders by n eans of conduitpipes a b, substantially as shown.

The elastic nedium employed nay be any elastic fluid, such as air, stean, dhe., adapted to the purpose.

In mechanisms embodyin g erushing-rollers it is necessary to provide means whereby the rollers may be easily and quickly adjusted in operative relation to crush with certainty and economy substanees of different degrees of hardness, and to accomplish this the rollers must be held or forced toward each other with a greater or less pressure, according to the nature of the material. It is also essential that the pressure of the rollers be a yielding one, so that in the event of an irreducible substance getting between them they will open freely and pass the substance through without damage to any of the parts involved. These requisites I attain by the means hereinafter described and shown, the operation of which will now be explained.

To depress or move the cylinders or boxes and the upper roller journaled therein, the cock or valve 21 is closed and the valve 21 opened. The elastic fluid from a compression chamber (not shown) is then free to enter the cylinders through the pipe 20 and the channel through the piston-sten to the under side of the pisten. The pressure created by this operation will exert an upward force on the pistons, the reaetion producing a down ward pressure on the cylinders, and bring the upper roller tightly down on the lower roller, the force of pressure thus created and exerted by the top roll being dependent on the pressure of the elastic fluid adnitted to the cylinders. hen it is desired to relieve the roller from this pressure, the valve 21 is closed, thus removing the pressure and aitording an escape for the fluid through any means provided for the purpose. 'The pressure will then be that due to the weight of the adjustable and yielding roller and the yoke and boxes as they are earried by the shaft of the roller.

hen t is desired to move the rollers apart, so that an opening may be formed between them, the Valve 21 is opened, admitting the flow of the fluid into the cylinders above the pistons, as heretofore specified. The 'fluid so admitted then exerts its force in the cylinders above the pistons, thereby forcing the top roller upward. In this mann er the rollers can be readily opened and as 'eadily brought together and put under pressure by the means of the elastie medium in the cylinders.

It is readily perceived froni the foregoing description that the invention can with slight mechanical modifications be applied to any movable and adjust-able bearings carrying crushing-rollers whether the crushing-roller be mounted in vertieally or horizontally movable bearings or in swinging bearings, and I do not desire to limit the invention to a specific construction in its application.

Having thus described my invention, what Iclaim, and desire to secure by Letters* Patent, is-

1. In an ore-erushin g mill, the combination of a crushing-roller journaled in stationary bea1'ings,1novab1e cylinders formed with bearings, and having upper and lower conduits *communicatin g between the cylinders, a crushing-roller journaled in the bearings of the cylinders, and stationary pistons in the cylinders having hollow stems opening, respectively, above and below the pistorleads, whereby the elastie inediun is delivered into the cylinders above or below the pisten-heads.

2. In a crushing-roller mill, the combination of vertically-arranged housings, sliding bearings in the housings, forned with cylinders and connected by a cross-piece having a passage opening into the base of each cylinder, pistons in the cylinders, one of which is formed with a sten having an interier passage opening into the eylinder below the pisten, and a pipe leading into the hollow pisten-stern to conduct an elastie fluid into the eylinder, substantiallyas and for the purpose specified.

In a crushing-roller mill, the combination of oppositely-arranged vertical housings, sliding bearings in the housings formed with cylinders and connected by a cross-piece having upper and lower passages opening respec- IOO IIO

tively at the top and bottom of the oylinders, In testimony whereof I he'eunto affix my pistons in the oylinders provided With hollow signature in presence of two witnesses. steme, opening respeotively above and below the pistons into the oylnders, and ppes lead- JOHN RO GER. ing into the passages of the pston-stems to XVtesses: conduct an elastio fluid above or below the D. BLACK,

pistons, substantially as described. JAMES HENDERSON. 

